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How to Fall Slower Than Gravity

By Adhemar Bultheel 14 / Aug / 2019

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100 Geometric Games

By Adhemar Bultheel 16 / Nov / 2015

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100 Numerical Games

By Adhemar Bultheel 16 / Nov / 2015

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Figures for Fun: Stories, Puzzles and Conundrums

By Adhemar Bultheel 16 / Nov / 2015

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Mathematical Curiosities. A Treasure Trove of Unexpected Entertainments

By Adhemar Bultheel 25 / Aug / 2014

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Jim Totten's Problems of the Week

By Adhemar Bultheel 5 / Nov / 2013

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